(a) The sound of the splash is actually heard 2.2 s after the rock is released from rest. How far below the top of the well is the surface of the water? The speed of sound in air (at the ambient temperature) is 336 m/s.

3m

739.2

To find the distance below the top of the well, we can use the speed of sound and the time it takes for the sound to reach the surface of the water. The speed of sound in air is given as 336 m/s, and the time it takes for the sound to reach the surface of the water is 2.2 s.

To calculate the distance, we can use the formula:

distance = speed × time

Substituting the values:

distance = 336 m/s × 2.2 s

Now we can solve for the distance:

distance ≈ 739.2 m.

Therefore, the surface of the water is approximately 739.2 meters below the top of the well.